Over the weekend I cut a 100mm block of wood and stuck it under the car. It was basically a perfect fit underneath the lowest points of the car, meaning at it's lowest the car was sitting at essentially exactly 100mm off the ground. Definitely shouldn't have been a reason for failure, I'll leave that block of wood in the passenger seat when I take it in next.
Hopefully the cert process doesn't take too long. Anyone have any recommendations regarding which certifier to go to? I was planning to go to Dave Page since he's just around the corner from where I work in East Tamaki.